>perl -MO=Concise -e"@a = (1,2,3,4);"
...
-        <1> ex-list lKP ->8    <-- "l" for list context
...

##</code><code>##

>perl -MO=Concise -e"$a = (1,2,3,4);"
...
5        <@> list sKP ->6       <-- "s" for scalar context
...

##</code><code>##

>perl -MO=Concise -e"(1,2,3,4); 1"
...
4     <@> list vKP ->5          <-- "v" for void context
...